Ralph the Heir is a novel by Anthony Trollope, originally published in 1871. Although Trollope described it as "one of the worst novels I have written", it was well received by contemporary critics. More recently, readers have found it noteworthy for its account of a corrupt Parliamentary election, an account based closely on Trollope's own experience as a candidate.

Anthony Trollope was an English novelist and civil servant of the Victorian era. Among his best-known works is a series of novels collectively known as the Chronicles of Barsetshire, which revolves around the imaginary county of Barsetshire. He also wrote novels on political, social, and gender issues, and other topical matters.